This lake in the Cascades lives up to its name, disappearing down a hole every spring.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Two geologically young and nearly circular volcanic subsidence craters, each about a half-mile in diameter, abruptly break the nearly featureless Snake River Plain.

The only bridge in the United States where BASE jumping is legal without a permit year-round.

This highest peak in Idaho can only be reached by traversing a formation known as "Chicken-Out Ridge."

One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

A creek tumbles over a series of step-like rocks to create this scenic water feature.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

These century-old beehive-shaped kilns were built to produce charcoal for nearby mines.

This set of hot springs also comes with fantastic views.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

Home to a timed geyser created by complete accident.

Jail from the 19th century that was built by inmates.

This tree has witnessed nearly 1,000 years of history.

A diorama lover's dream world.

This family-owned restaurant celebrates Native American cuisine.

This 50-ton ship on Orcas Island has never seen the ocean.

This fog-enshrouded, antique corner store sells individual slices of wedding-fancy layer cakes from a window.

Eat your way from Ghana to Myanmar on this globe-trotting menu.

At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

A rare tour of a commercial jet assembly plant, held inside one of the largest buildings in the world.

The Denny Substation has been called "the coolest substation in the world" and sits in a densely populated Seattle neighborhood.

A 1940s nuclear reactor built to produce plutonium for the Manhattan Project.

People come from across the globe to swim in this lake believed to have healing properties.